/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Returns the name of metadata for a given element
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category=URigHierarchy) [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > GetMetadataNames ( [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) InItem )